Use cases and resources for media-insights-on-aws

Source: https://github.com/aws-solutions/media-insights-on-aws

Trying to get my head wrapped around what the MIE application's main function is.

1. Is it strictly a framework for describing ETL jobs or does it also do the ETL jobs?
2. Does it deploy newly isolated stacks for different ETL jobs? Or is everything maintained in the same stack
3. Is there any resource/tutorial of it being used in action